EP3499830A1 - Dispositif terminal, dispositif station de base, procédé de communication et circuit intégré - Google Patents

Dispositif terminal, dispositif station de base, procédé de communication et circuit intégré Download PDF

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Publication number
EP3499830A1
EP3499830A1 EP17839560.4A EP17839560A EP3499830A1 EP 3499830 A1 EP3499830 A1 EP 3499830A1 EP 17839560 A EP17839560 A EP 17839560A EP 3499830 A1 EP3499830 A1 EP 3499830A1
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EP
European Patent Office
Prior art keywords
pusch
fdma symbol
lbt
fdma
transmission
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17839560.4A
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German (de)
English (en)
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EP3499830B1 (fr
EP3499830A4 (fr
Inventor
Tomoki Yoshimura
Wataru Ouchi
Shoichi Suzuki
Liqing Liu
Kimihiko Imamura
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FG Innovation Co Ltd
Sharp Corp
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FG Innovation Co Ltd
Sharp Corp
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Publication of EP3499830A4 publication Critical patent/EP3499830A4/fr
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/21—Control channels or signalling for resource management in the uplink direction of a wireless link, i.e. towards the network
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/26—Systems using multi-frequency codes
    • H04L27/2601—Multicarrier modulation systems
    • H04L27/2602—Signal structure
    • H04L27/2605—Symbol extensions, e.g. Zero Tail, Unique Word [UW]
    • H04L27/2607—Cyclic extensions
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT the frequencies being arranged in component carriers
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0044—Arrangements for allocating sub-channels of the transmission path allocation of payload
    • H04L5/0046—Determination of how many bits are transmitted on different sub-channels
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
    • H04W16/14—Spectrum sharing arrangements between different networks
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/02—Traffic management, e.g. flow control or congestion control
    • H04W28/06—Optimizing the usage of the radio link, e.g. header compression, information sizing, discarding information
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/0006—Assessment of spectral gaps suitable for allocating digitally modulated signals, e.g. for carrier allocation in cognitive radio
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A), DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0042—Arrangements for allocating sub-channels of the transmission path intra-user or intra-terminal allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal

Definitions

  • the present invention relates to a terminal apparatus, a base station apparatus, a communication method, and an integrated circuit.
  • LTE Long Term Evolution
  • EUTRA Evolved Universal Terrestrial Radio Access
  • 3GPP 3rd Generation Partnership Project
  • a base station apparatus is also referred to as an evolved NodeB (eNodeB)
  • a terminal apparatus is also referred to as a User Equipment (UE).
  • UE User Equipment
  • LTE is a cellular communication system in which multiple areas are deployed in a cellular structure, with each of the multiple areas being covered by a base station apparatus.
  • a single base station apparatus may manage multiple cells.
  • carrier aggregation has been specified which is a technique that allows a terminal apparatus to perform simultaneous transmission and/or reception in multiple serving cells (component carriers) (NPL 1, 2, and 3).
  • NPL 1 components carriers
  • NPL 4 extensions of the Licensed Assisted Access (LAA) and carrier aggregation using uplink carriers in an unlicensed band have been studied (NPL 4).
  • NPL 5 the transmission of HARQ-ACK feedback to the uplink carriers in an unlicensed band on PUSCH, based on a trigger by a base station apparatus is diclosed.
  • NPL 6 it is disclosed that a part of PUSCH (e.g., a head symbol of PUSCH) is not transmitted by LBT.
  • One aspect of the present invention provides a terminal apparatus capable of efficiently performing an uplink transmission, a communication method used for the terminal apparatus, an integrated circuit mounted on the terminal apparatus, a base station apparatus capable of efficiently receiving an uplink transmission, a communication method used for the base station apparatus, and an integrated circuit mounted on the base station apparatus.
  • a terminal apparatus can efficiently perform uplink transmission.
  • the base station apparatus can efficiently receive uplink transmission.
  • SC-FDMA symbols being transmitted may mean time continuous signals of the SC-FDMA symbols being transmitted.
  • SC-FDMA symbols being transmitted may mean time continuous signals generated based on the contents of resource elements corresponding to the SC-FDMA symbols being transmitted.
  • FIG. 1 is a conceptual diagram of a radio communication system according to the present embodiment.
  • the radio communication system includes terminal apparatuses 1A to 1C and a base station apparatus 3.
  • Each of the terminal apparatuses 1A to 1C is referred to as a terminal apparatus 1.
  • multiple serving cells are configured for the terminal apparatus 1.
  • a technology in which the terminal apparatus 1 communicates via the multiple serving cells is referred to as cell aggregation or carrier aggregation.
  • One aspect of the present invention may be applied to each of the multiple serving cells configured for the terminal apparatus 1.
  • One aspect of the present invention may be applied to some of the multiple serving cells configured.
  • One aspect of the present invention may be applied to each of groups of the multiple serving cells configured.
  • One aspect of the present invention may be applied to some of groups of the multiple serving cells configured.
  • the multiple serving cells includes at least one primary cell.
  • the multiple serving cells may include one or multiple secondary cells.
  • the multiple serving cells may include one or more Licensed Assisted Access (LAA) cells.
  • LAA Licensed Assisted Access
  • the primary cell is a serving cell in which an initial connection establishment procedure has been performed, a serving cell in which a connection re-establishment procedure has been started, or a cell indicated as a primary cell in a handover procedure.
  • the secondary cell(s) and/or LAA cell(s) may be configured at a point of time when or after a Radio Resource Control (RRC) connection is established.
  • RRC Radio Resource Control
  • the primary cell may be included in a licensed band.
  • the LAA cell(s) may be included in an unlicensed band.
  • the secondary cell(s) may be included in either a licensed band or an unlicensed band.
  • the LAA cell may be referred to as a LAA secondary cell.
  • a carrier corresponding to a serving cell in the downlink is referred to as a downlink component carrier.
  • a carrier corresponding to a serving cell in the uplink is referred to as an uplink component carrier.
  • the downlink component carrier and the uplink component carrier are collectively referred to as a component carrier.
  • the terminal apparatus 1 can perform simultaneous transmission and/or reception on multiple physical channels in multiple serving cells (component carriers).
  • a single physical channel is transmitted in a single serving cell (component carrier) out of the multiple serving cells (component carriers).
  • the following uplink physical channels are used.
  • the uplink physical channels are used for transmitting information output from a higher layer.
  • the PUSCH is used for transmitting uplink data (Transport block, Uplink-Shared Channel (UL-SCH)), the Channel State Information (CSI) of downlink, and/or the Hybrid Automatic Repeat reQuest (HARQ-ACK).
  • uplink data Transport block, Uplink-Shared Channel (UL-SCH)
  • CSI Channel State Information
  • HARQ-ACK Hybrid Automatic Repeat reQuest
  • the CSI, as well as the HARQ-ACK, is Uplink Control Information (UCI).
  • UCI Uplink Control Information
  • the CSI includes a Channel Quality Indicator (CQI), a Rank Indicator (RI), and a Precoding Matrix Indicator (PMI).
  • CQI expresses a combination of a modulation scheme and a coding rate for a single transport block to be transmitted on the PDSCH.
  • the RI indicates the number of valid layers determined by the terminal apparatus 1.
  • the PMI indicates a code book determined by the terminal apparatus 1.
  • the code book is associated with precoding of PDSCH.
  • the HARQ-ACK corresponds to downlink data (Transport block, Medium Access Control Protocol Data Unit: MAC PDU, Downlink-Shared Channel: DL-SCH, Physical Downlink Shared Channel: PDSCH).
  • the HARQ-ACK indicates an acknowledgement (ACK) or a negative-acknowledgement (NACK).
  • ACK acknowledgement
  • NACK negative-acknowledgement
  • the HARQ-ACK is also referred to as ACK/NACK, HARQ feedback, HARQ acknowledge, HARQ information, or HARQ control information.
  • the PRACH is used to transmit a random access preamble.
  • the following uplink physical signal is used in the uplink radio communication.
  • the uplink physical signal is not used for transmitting information output from the higher layer, but is used by the physical layer.
  • DMRS Demodulation Reference Signal
  • the DMRS is associated with transmission of the PUSCH.
  • the DMRS is time-multiplexed with the PUSCH.
  • the base station apparatus 3 may use the DMRS in order to perform channel compensation of the PUSCH.
  • the following downlink physical channels are used for downlink radio communication from the base station apparatus 3 to the terminal apparatus 1.
  • the downlink physical channels are used for transmitting information output from the higher layer.
  • the PDCCH is used to transmit Downlink Control Information (DCI).
  • DCI Downlink Control Information
  • the downlink control information is also referred to as DCI format.
  • the downlink control information includes an uplink grant.
  • the uplink grant may be used for scheduling a single PUSCH within a single cell.
  • the uplink grant may be used for scheduling multiple PUSCHs in consecutive subframes within a single cell.
  • the uplink grant may be used for scheduling of a single PUSCH within the fourth or later subframe from the subframe in which the uplink grant is transmitted.
  • the DCI used for scheduling a PUSCH may include information indicating that a part of time continuous signals of a SC-FDMA symbol included in the PUSCH is not transmitted.
  • the information indicating that a part of time continuous signals of a SC-FDMA symbol included in the PUSCH is not transmitted may be information indicating a SC-FDMA symbol (Starting symbol) that starts the transmission.
  • the information indicating that a part of time continuous signals of a SC-FDMA symbol included in the PUSCH is not transmitted may be information indicating a transmission ending symbol.
  • the information indicating that a part of time continuous signals of a SC-FDMA symbol included in the PUSCH is not transmitted may be information indicating that dummy signals are transmitted in some of the time continuous signals of some SC-FDMA symbols included in the PUSCHs.
  • the dummy signals may be extended Cyclic Prefixes (CPs) of the SC-FDMA symbol following a part of SC-FDMA symbols included in the PUSCHs, or time continuous signals generated based on the contents of resource elements corresponding to the SC-FDMA symbol following a part of SC-FDMA symbols included in the PUSCHs.
  • CPs Cyclic Prefixes
  • the DCI used for scheduling one PUSCH is also referred to as DCI format 0A or DCI format 4A.
  • the DCI used for scheduling multiple PUSCHs is also referred to as DCI format 0B or DCI format 4B.
  • DCI format 0B and DCI format 4B are also collectively referred to as DCI type B.
  • DCI type B may be used for scheduling multiple consecutive PUSCHs.
  • the information included in the DCI and indicating that some SC-FDMA symbols included in the PUSCHs are not transmitted may be applied only to some of the multiple the PUSCHs.
  • the UL-SCH is a transport channel.
  • a channel used in a Medium Access Control (MAC) layer is referred to as a transport channel.
  • a unit of the transport channel used in the MAC layer is also referred to as a transport block (TB) or a MAC Protocol Data Unit (PDU).
  • TB transport block
  • PDU MAC Protocol Data Unit
  • FIG. 2 is a diagram illustrating a schematic configuration of a radio frame according to the present embodiment.
  • the horizontal axis is a time axis.
  • Each of the radio frames is 10 ms in length.
  • Each of the radio frames is constituted of 10 subframes.
  • Each of the subframes is 1 ms in length and is defined by two consecutive slots.
  • Each of the slots is 0.5 ms in length.
  • the i-th subframe within a radio frame is constituted of the (2 ⁇ i)-th slot and the (2 ⁇ i + 1)-th slot.
  • 10 subframes are available in each 10 ms interval.
  • FIG. 3 is a diagram illustrating a schematic configuration of an uplink slot according to the present embodiment.
  • FIG. 3 illustrates a configuration of an uplink slot in a cell.
  • the horizontal axis is a time axis
  • the vertical axis is a frequency axis.
  • l is an SC-FDMA symbol number/index
  • k is a subcarrier number/index.
  • the physical signal or the physical channel transmitted in each of the slots is expressed by a resource grid.
  • the resource grid is defined by multiple subcarriers and multiple SC-FDMA symbols.
  • Each element within the resource grid is referred to as a resource element.
  • the resource element is expressed by a subcarrier number/index k and an SC-FDMA symbol number/index l.
  • N UL symb indicates the number of SC-FDMA symbols included in one uplink slot.
  • N UL symb is 7.
  • N UL symb is 6.
  • the terminal apparatus 1 receives the parameter UL-CyclicPrefixLength indicating the CP length in the uplink from the base station apparatus 3.
  • the base station apparatus 3 may broadcast, in the cell, system information including the parameter UL-CyclicPrefixLength corresponding to the cell.
  • N UL RB is an uplink bandwidth configuration for the serving cell expressed by a multiple of N RB sc .
  • N RB sc is the (physical) resource block size in the frequency domain expressed by the number of subcarriers.
  • the subcarrier spacing ⁇ f may be 15 kHz, and N RB sc may be 12.
  • N RB sc may be 180 kHz.
  • a resource block is used to express mapping of a physical channel to resource elements.
  • a virtual resource block (VRB) and a physical resource block (PRB) are defined.
  • a physical channel is first mapped to a virtual resource block. Thereafter, the virtual resource block is mapped to the physical resource block.
  • One physical resource block is defined by N UL symb consecutive SC-FDMA symbols in the time domain and by N RB sc consecutive subcarriers in the frequency domain.
  • N UL symb consecutive SC-FDMA symbols in the time domain
  • N RB sc consecutive subcarriers in the frequency domain.
  • one physical resource block is constituted by (N UL symb ⁇ N RB sc ) resource elements.
  • One physical resource block corresponds to one slot in the time domain.
  • the physical resource blocks are numbered n PRB (0, 1,..., N UL RB -1) in ascending order of frequencies in the frequency domain.
  • the downlink slot according to the present embodiment includes multiple OFDM symbols. Since the configuration of the downlink slot according to the present embodiment is basically the same except that a resource grid is defined by multiple subcarriers and multiple OFDM symbols, the description of the configuration of the downlink slot will be omitted.
  • FIG. 4 is a schematic block diagram illustrating a configuration of the terminal apparatus 1 according to the present embodiment.
  • the terminal apparatus 1 is configured to include a radio transmission and/or reception unit 10 and a higher layer processing unit 14.
  • the radio transmission and/or reception unit 10 is configured to include an antenna unit 11, a Radio Frequency (RF) unit 12, and a baseband unit 13.
  • the higher layer processing unit 14 is configured to include a medium access control layer processing unit 15 and a radio resource control layer processing unit 16.
  • the radio transmission and/or reception unit 10 is also referred to as a transmitter, a receiver or a physical layer processing unit.
  • the higher layer processing unit 14 outputs uplink data (transport block) generated by a user operation or the like, to the radio transmission and/or reception unit 10.
  • the higher layer processing unit 14 performs processing of the Medium Access Control (MAC) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Radio Resource Control (RRC) layer.
  • MAC Medium Access Control
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • RRC Radio Resource Control
  • the medium access control layer processing unit 15 included in the higher layer processing unit 14 performs processing of the Medium Access Control layer.
  • the medium access control layer processing unit 15 controls random access procedure in accordance with the various configuration information/parameters managed by the radio resource control layer processing unit 16.
  • the radio resource control layer processing unit 16 included in the higher layer processing unit 14 performs processing of the Radio Resource Control layer.
  • the radio resource control layer processing unit 16 manages various types of configuration information/parameters of its own apparatus.
  • the radio resource control layer processing unit 16 sets various types of configuration information/parameters, based on higher layer signaling received from the base station apparatus 3. Namely, the radio resource control unit 16 sets the various configuration information/parameters in accordance with the information indicating the various configuration information/parameters received from the base station apparatus 3.
  • the radio resource control layer processing unit 36 generates uplink data (transport block) allocated on a PUSCH, an RRC message, a MAC Control Element (CE), and the like, and outputs the generated data to the radio transmission and/or reception unit 30.
  • the radio transmission and/or reception unit 10 performs processing of the physical layer, such as modulation, demodulation, coding, decoding, and the like.
  • the radio transmission and/or reception unit 10 demultiplexes, demodulates, and decodes a signal received from the base station apparatus 3, and outputs the information resulting from the decoding to the higher layer processing unit 14.
  • the radio transmission and/or reception unit 10 generates a transmit signal by modulating and coding data, and performs transmission to the base station apparatus 3.
  • the RF unit 12 converts (down-converts) a signal received via the antenna unit 11 into a baseband signal by orthogonal demodulation and removes unnecessary frequency components.
  • the RF unit 12 outputs the processed analog signal to the baseband unit.
  • the baseband unit 13 converts the analog signal input from the RF unit 12 into a digital signal.
  • the baseband unit 13 removes a portion corresponding to a Cyclic Prefix (CP) from the digital signal resulting from the conversion, performs Fast Fourier Transform (FFT) of the signal from which the CP has been removed, and extracts a signal in the frequency domain.
  • CP Cyclic Prefix
  • FFT Fast Fourier Transform
  • the baseband unit 13 performs Inverse Fast Fourier Transform (IFFT) of the data, generates a time signal of an SC-FDMA symbol including the CP, generates a digital signal of the baseband, and converts the digital signal of the baseband into an analog signal.
  • IFFT Inverse Fast Fourier Transform
  • the baseband unit 13 outputs the analog signal resulting from the conversion, to the RF unit 12.
  • FIG. 5 is a block diagram illustrating an example of a process (transmit process 3000) of a baseband unit 13.
  • Transmission process 3000 is a configuration including at least one of a coding (coding processing unit) 3001, a Scrambling (scrambling processing unit) 3002, a Modulation mapper 3003, a Layer mapper 3004, a Transform precoder 3005, a Precoder 3006, a Resource element mapper 3007, an OFDM baseband signal generation (OFDM baseband signal generation processing unit) 3008.
  • the Coding 3001 includes a function to code transport block or uplink control information by error correction coding process (turbo coding process, Tail Biting Convolutional Code (TBCC) coding process or iteration code, and the like) and to generate coded bits.
  • error correction coding process turbo coding process, Tail Biting Convolutional Code (TBCC) coding process or iteration code, and the like
  • TBCC Tail Biting Convolutional Code
  • the Scrambling 3002 includes a function to convert coded bits into scrambled bits by a scrambling process.
  • the scrambled bits are input into the Modulation mapper 3003.
  • the Modulation mapper 3003 includes a function to convert the scrambled bit into modulation bits by a modulation mapping process.
  • the modulation bits are obtained by performing modulation processes such as Quaderature Phase Shift Keying (QPSK), Quaderature Amplitude Modulation (16QAM), 64QAM, 256QAM, and the like, to the scrambled bits.
  • QPSK Quaderature Phase Shift Keying
  • 16QAM Quaderature Amplitude Modulation
  • 64QAM 64QAM
  • 256QAM 256QAM
  • the modulation bits are input into the Layer mapper 3004.
  • the Layer mapper 3004 includes a function to map (layer-map) modulation symbols onto each layer.
  • the layer is the index with respect to the multiplicity of a physical layer signal in the spatial domain. That is, for example, in a case that the number of the layers is 1, it means that spatial multiplexing is not performed. In a case that the number of the layers is 2, it means that two kinds of physical layer signals are spatially multiplexed.
  • the layer-mapped modulation symbols (hereafter, the layer-mapped modulation symbol is also referred to as a modulation symbol) are input to the Transform precoder 3005.
  • the Transform precoder 3005 includes a function to generate complex symbols, based on the modulation symbols and/or NULL signals.
  • a function to generate complex symbols, based on the modulation symbols and/or NULL signals in the Transform precoder 3005 is given by the following Equation (7).
  • Equation (1) ⁇ is the index of the layer, M PUSCH sc is the number of subcarriers in the bandwidth of the scheduled PUSCH, x ( ⁇ ) is the modulation symbol in the layer index ⁇ , i is the index of the modulation symbol, j is an imaginary unit, M layer PUSCH is the number of modulation symbols per layer, and ⁇ is the circumference ratio.
  • x ( ⁇ ) may be NULL.
  • some of x ( ⁇ ) being NULL may mean that zero (a complex number or an actual number) is substituted for some of x ( ⁇ ) .
  • the modulation symbol generated by the Layer mapper 3004 or the Modulation mapper 3003 is x ( ⁇ ) 0
  • O m may be a sequence constituted of one or multiple zeros.
  • [A, B] is an operation to output the sequence where the sequence A and the sequence B are combined.
  • the complex symbols are input into the Precoder 3006.
  • the Precoder 3006 generates a transmission symbol for every transmit antenna by multiplying a complex symbol by a precoder.
  • the transmission symbols are input into the Resource element mapper 3007.
  • the Resource element mapper 3007 maps the transmission symbol every transmit antenna port onto a resource element respectively.
  • the baseband signal generation 3008 includes a function to convert a modulation symbol mapped to a resource element into a baseband signal (time continuous signal).
  • the baseband signal generation 3008 generates a time continuous signal, based on the contents (e.g., a modulation symbol) of the resource element corresponding to the SC-FDMA symbol by Equation (2).
  • s (p) l is a time continuous signal at the time t of the SC-FDMA symbol l, generated based on contents corresponding to the SC-FDMA symbol l second , at the antenna port p.
  • N UL RB is the number of the resource blocks of the uplink band
  • N RB sc is the number of the subcarrier of the resource block
  • ceil () is a ceiling function
  • floor () is a floor function
  • a (p) k (-) ,l is contents of the resource element (k, l) at the antenna port p
  • l second is the index of the SC-FDMA symbol.
  • ⁇ f 15 kHz.
  • N CP,l is the CP length of the SC-FDMA symbol l.
  • T s l/ (15,000 * 2,048).
  • the time t includes a value within the range from T l,0 to (N CP,l + N) * T s .
  • the RF unit 12 removes unnecessary frequency components from the analog signal input from the baseband unit 13 using a low-pass filter, up-converts the analog signal into a signal of a carrier frequency, and transmits the up converted signal via the antenna unit 11. Furthermore, the RF unit 12 amplifies power. Furthermore, the RF unit 12 may have a function of controlling transmit power. The RF unit 12 is also referred to as a transmit power control unit.
  • FIG. 6 is a schematic block diagram illustrating a configuration of the base station apparatus 3 according to the present embodiment.
  • the base station apparatus 3 is configured to include a radio transmission and/or reception unit 30 and a higher layer processing unit 34.
  • the radio transmission and/or reception unit 30 is configured to include an antenna unit 31, an RF unit 32, and a baseband unit 33.
  • the higher layer processing unit 34 is configured to include a medium access control layer processing unit 35 and a radio resource control layer processing unit 36.
  • the radio transmission and/or reception unit 30 is also referred to as a transmitter, a receiver or a physical layer processing unit.
  • the higher layer processing unit 34 performs processing of the Medium Access Control (MAC) layer, the Packet Data Convergence Protocol (PDCP) layer, the Radio Link Control (RLC) layer, and the Radio Resource Control (RRC) layer.
  • MAC Medium Access Control
  • PDCP Packet Data Convergence Protocol
  • RLC Radio Link Control
  • RRC Radio Resource Control
  • the medium access control layer processing unit 35 included in the higher layer processing unit 34 performs processing of the Medium Access Control layer.
  • the radio resource control layer processing unit 36 included in the higher layer processing unit 34 performs processing of the Radio Resource Control layer.
  • the radio resource control layer processing unit 36 generates, or acquires from a higher node, downlink data (transport block) allocated on a PDSCH, system information, an RRC message, a MAC Control Element (CE), and the like, and performs output to the radio transmission and/or reception unit 30.
  • the radio resource control layer processing unit 36 manages various types of configuration information/parameters for each of the terminal apparatuses 1.
  • the radio resource control layer processing unit 36 may set various types of configuration information/parameters for each of the terminal apparatuses 1 via the higher layer signal. Namely, the radio resource control layer processing unit 36 transmits/broadcasts information indicating various types of configuration information/parameters.
  • the functionality of the radio transmission and/or reception unit 30 is similar to the functionality of the radio transmission and/or reception unit 10, and hence description thereof is omitted.
  • Each of the units having the reference signs 10 to 16 included in the terminal apparatus 1 may be configured as a circuit.
  • Each of the units having the reference signs 30 to 36 included in the base station apparatus 3 may be configured as a circuit.
  • a group of multiple LAA cells is referred to as a UCI cell group.
  • the HARQ-ACK corresponding to the multiple LAA cells included in the UCI cell group may be transmitted on a PUSCH in one or more LAA cells in the UCI cell group.
  • the UCI cell group does not always include a primary cell.
  • the base station apparatus 3 may determine whether the UCI cell group includes a LAA cell.
  • the base station apparatus 3 may transmit information/higher layer parameter indicating whether the UCI group includes a LAA cell to the terminal apparatus 1.
  • a CSI request and a HARQ-ACK request may be included in the uplink grant corresponding to the LAA cell included in the UCI cell group.
  • the field mapped to the bits of the CSI request is also referred to as a CSI request field.
  • the field mapped to the bits of the HARQ-ACK request is also referred to as a HARQ-ACK request field.
  • the terminal apparatus 1 transmits the HARQ-ACK using PUSCH in the LAA cell.
  • the transmission of HARQ-ACK may not be triggered in a case that 1 bit of the HARQ-ACK request field is set to be '0'.
  • the transmission of HARQ-ACK may be triggered in a case that 1 bit of the HARQ-ACK request field is set to be '1'.
  • the terminal apparatus 1 performs CSI reporting using PUSCH in the LAA cell.
  • the CSI reporting may not be triggered in a case that 2 bits of the CSI request field is set to be '00'.
  • the CSI reporting may be triggered in a case that 2 bits of the CSI request field is set to be a value except '00'.
  • a coding process of an uplink data (a x ), a CQI/PMI (o x ), an RI (b x ), and a HARQ-ACK (c x ) transmitted using PUSCH will be described below.
  • FIG. 7 is a diagram illustrating an example of a coding process of the uplink data (ax), the CQI/PMI (o x ), the RI (b x ), and the HARQ-ACK (c x ) according to the present embodiment.
  • the uplink data, the CQI/PMI, the RI, and the HARQ-ACK transmitted using PUSCH are coded in 600 to 603 in FIG. 7 individually.
  • Coded bits of the uplink data (f x ), coded bits of the CQI/PMI (q x ), coded bits of the RI (g x ), and coded bits of the HARQ-ACK (h x ) are multiplexed and interleaved in 604 in FIG. 7 .
  • a baseband signal (a signal of PUSCH) is generated in 605 in FIG. 7 from the coded bits multiplexed and interleaved in 604.
  • a matrix may be used for multiplexing and interleaving the coded bits.
  • the column of the matrix corresponds to the SC-FDMA symbol.
  • One element of the matrix corresponds to one coding modulation symbol.
  • the coding modulation symbol is a group of X coded bits. X is the modulation order (Q m ) corresponding to the PUSCH (uplink data).
  • Q m the modulation order
  • One complex number symbol is generated from one coding modulation symbol.
  • Multiple complex number symbols generated from multiple coding modulation symbols mapped to one column are assigned to the PUSCH and mapped to the subcarrier after DFT precoding.
  • FIG. 8 is the diagram illustrating an example of multiplexing and interleaving of coded bits according to the present embodiment.
  • the coding modulation symbols of the HARQ-ACK are mapped to columns of indexes ⁇ 2, 3, 8, 9 ⁇ , and in addition, the coding modulation symbols of the RI are mapped to columns of indexes ⁇ 1, 4, 7, 10 ⁇ .
  • the columns of indexes ⁇ 2, 3, 8, 9 ⁇ correspond to the SC-FDMA symbol next to the SC-FDMA symbol where the DMRS associated with the PUSCH transmission is transmitted.
  • the DMRS is transmitted in the SC-FDMA symbol between the SC-FDMA symbol corresponding to the column of index 2 and the SC-FDMA symbol corresponding to the column of index 3.
  • the DMRS is transmitted in the SC-FDMA symbol between the SC-FDMA symbol corresponding to the column of index 8 and the SC-FDMA symbol corresponding to the column of index 9.
  • the columns of indexes ⁇ 1, 4, 7, 10 ⁇ corresponds to the SC-FDMA symbol 2 symbols away from the SC-FDMA symbol where the DMRS associated with the PUSCH transmission is transmitted.
  • min () is a function to return the smallest value among the multiple input values.
  • ceil () is a function to return the smallest integer that is bigger than the input value.
  • O is the number of bits of the RI or the number of bits of the HARQ-ACK.
  • L is the number of CRC parity bits added to the RI or the HARQ-ACK.
  • C is the number of code blocks.
  • K r is the size of the code block r. Multiple code blocks are given by dividing one transport block.
  • M PUSCH-initial sc is the bandwidth scheduled for the PUSCH initial transmission, and is obtained from the initial PDCCH for the same transport block.
  • M PUSCH-initial sc may be expressed by the number of subcarriers.
  • N PUSCH-initial symbol is the number of SC-FDMA symbols for the PUSCH initial transmission for the same transport block.
  • the same transport block is a transport block transmitted on the PUSCH with the UCI.
  • ⁇ RI offset may be given at least based on some or all of the following elements (1) to (5).
  • Element (1) whether the serving cell where the PUSCH is transmitted belongs to the UCI cell group Element (2): whether the HARQ-ACK transmission is performed using the PUSCH Element (3): the value of the HARQ-ACK request field Element (4): the number of the SC-FDMA symbols for the PUSCH Element (5): the column to which coding modulation symbols of the RI are mapped (the SC-FDMA symbol where the RI is transmitted)
  • ⁇ RI offset may be given by information/parameter received from the base station apparatus 3.
  • the terminal apparatus may select one from the multiple ⁇ RI offset given by information/parameter received from the base station apparatus 3, at least based on some or all of the element (1) to (5) above.
  • ⁇ HARQ-ACK offset may be given at least based on some or all of the elements (1) to (5).
  • ⁇ HARQ-ACK offset may be given by information/parameter received from the base station apparatus 3.
  • ⁇ HARQ-ACK offset may be given regardless of element (1) above.
  • ⁇ CQI offset may be given at least based on some or all of the elements (1) to (5).
  • ⁇ CQI offset may be given by information/parameter received from the base station apparatus 3.
  • the transmit power P PUSCH,c (i) may be given by the following Equation (5).
  • P PUSCH , c i min 10 log 10 M PUSCH , c i + P O _ PUSCH , c j + ⁇ c j ⁇ PL c + ⁇ TF , c i + f c i P CMAX , c l , dBm where,
  • P CMAX,c (i) is the maximum transmit power configured for the terminal apparatus 1 in subframe i in the serving cell c.
  • M PUSCH,c (i) is a bandwidth of PUSCH resource allocation in subframe i in the serving cell c.
  • the PUSCH resource allocation bandwidth is expressed by the number of resource blocks.
  • P O PUSCH,c (j) is given based on two parameters provided by the higher layer.
  • ⁇ c is given by a parameter given by the higher layer.
  • PL c is the downlink path loss estimate for the serving cell c calculated by the terminal apparatus 1.
  • f c (i) is derived by a TPC command.
  • the TPC command may be included in the DCI format for the serving cell c.
  • Equation (5) ⁇ TF,c in Equation (5) may be given by the following Equation (6).
  • K s is given by a parameter provided by the higher layer.
  • ⁇ PUSCH offset is given by ⁇ CQI offset .
  • ⁇ CQI offset may be given by information/parameter received from the base station apparatus 3.
  • ⁇ CQI offset may be given regardless of element (1) above.
  • ⁇ PUSCH offset is 1.
  • the BPRE in Equation (6) is given by the following Equation (7).
  • O CQI is the number of bits of the CQI/PMI including the CRC parity bits.
  • N RE is the number of resource elements.
  • NRE is the product of M PUSCH-initial sc and N PUSCH-initial symbol .
  • the transmit power P PUSCH,c (i) for the PUSCH transmission is given based on M PUSCH-initial sc and N PUSCH-initial symbol .
  • FIG. 9 is a diagram illustrating PUSCH initial transmission and the first example of initial PDCCH according to the present embodiment.
  • the terminal apparatus 1 receives PDCCH 800 including an uplink grant indicating initial transmission.
  • PDCCH 800 is also referred to as initial PDCCH 800.
  • the terminal apparatus 1 transmits PUSCH 802 including the transport block x, based on detection of PDCCH 800.
  • PUSCH 802 is also referred to as initial transmission PUSCH.
  • the terminal apparatus 1 receives PDCCH 804 including an uplink grant indicating retransmission.
  • the CSI request field included in the uplink grant of PDCCH 804 may be set to trigger CSI reporting.
  • the HARQ-ACK request field included in the uplink grant of PDCCH 804 may be set to trigger HARQ-ACK transmission.
  • the terminal apparatus 1 transmits PUSCH 806 including the UCI (the CQI/PMI, the RI, and/or the HARQ-ACK) and the same transport block x, based on detection of PDCCH 804.
  • PUSCH 806 is also referred to as retransmission PUSCH 806.
  • PUSCH 806 corresponds to retransmission of the initial transmission PUSCH 802.
  • PDCCH 800, 804 and PUSCH 802, 806 correspond to the same HARQ process.
  • the number of coded bits Q of the CQI/PMI, the number of coded bits G of the RI, the number of coded bits H of the HARQ-ACK, and the transmit power for PUSCH 806, P PUSCH,c (i) are the bandwidth scheduled for PUSCH 802, and are given at least based on M PUSCH-initial sc obtained from PDCCH 800 and the number of the SC-FDMA symbols for PUSCH 802 for the same transport block x, N PUSCH-initial symbol .
  • FIG. 10 is a diagram illustrating PUSCH initial transmission and the second example of initial PDCCH according to the present embodiment.
  • the base station apparatus 3 transmits PDCCH 900 including an uplink grant indicating initial transmission. However, the terminal apparatus 1 does not transmit PUSCH 902 corresponding to PDCCH 900 by failing in detection of PDCCH 900.
  • PDCCH 900 is also referred to as initial PDCCH 900.
  • the terminal apparatus 1 receives PDCCH 904 including an uplink grant indicating transmission.
  • the terminal apparatus 1 transmits PUSCH 906 including the transport block x, based on detection of PDCCH 904.
  • PUSCH 906 is also referred to as retransmission PUSCH 906.
  • PUSCH 906 corresponds to retransmission of PUSCH 902.
  • the terminal apparatus 1 receives PDCCH 908 including an uplink grant indicating transmission.
  • the CSI request field included in the uplink grant of PDCCH 908 may be set to trigger CSI reporting.
  • the HARQ-ACK request field included in the uplink grant of PDCCH 908 may be set to trigger HARQ-ACK transmission.
  • the terminal apparatus 1 transmits PUSCH 910 including the UCI (the CQI/PMI, the RI, and/or the HARQ-ACK) and the transport block x, based on detection of PDCCH 908.
  • PUSCH 910 is also referred to as retransmission PUSCH 910.
  • PUSCH 910 corresponds to retransmission of PUSCH 902 and/or PUSCH 906.
  • PDCCH 900, 904, 908 and PUSCH 902, 906, 910 correspond to the same HARQ process.
  • P PUSCH,c (i) are the bandwidth scheduled for PUSCH 906, and are given at least based on M PUSCH-initial sc obtained from initial PDCCH 904 and the number of the SC-FDMA symbols for PUSCH 906 for the same transport block x, N PUSCH-initial symbol .
  • the number of coded bits Q of the CQI/PMI, the number of coded bits G of the RI, the number of coded bits H of the HARQ-ACK, and the transmit power for PUSCH 910, P PUSCH,c (i) may be the bandwidth scheduled for PUSCH 902, and be given at least based on M PUSCH-initial sc obtained from PDCCH 900 and the number of the SC-FDMA symbols for PUSCH 902 for the same transport block x, N PUSCH-initial symbol .
  • FIG. 11 is a diagram illustrating PUSCH initial transmission and the third example of initial PDCCH according to the present embodiment.
  • the terminal apparatus 1 receives PDCCH 1000 including an uplink grant indicating initial transmission.
  • PDCCH 1000 is also referred to as initial PDCCH 1000.
  • the terminal apparatus 1 does not transmit PUSCH 1002 corresponding to PDCCH 1000.
  • PUSCH 1002 is also referred to as initial transmission PUSCH 1002.
  • the terminal apparatus 1 may set the transmit power for PUSCH 1002 to be 0, or may drop PUSCH 1002. For example, the terminal apparatus 1 may drop PUSCH 1002 in a case that a result of LBT (Listen Before Talk) corresponding to PUSCH 1002 is in a busy state.
  • LBT Listen Before Talk
  • the procedure of LBT is defined as the mechanism by which the terminal apparatus 1 applies a Clear Channel Assessment (CCA) check before the transmission in the serving cell.
  • the terminal apparatus 1 performs power detection or signal detection to determine the presence or absence of other signals in the serving cell in order to identify whether the serving cell is in an idle state or in the busy state.
  • the CCA is also referred to as a carrier sense.
  • the terminal apparatus 1 performs measurement (detection) of interference power (interference signal, reception power, receiving signal, noise power, noise signal) and the like in the serving cell, before transmitting a physical channel and a physical signal using the serving cell (component carrier, channel, medium, frequency).
  • the terminal apparatus 1 identifies (detects, assumes, determines) whether the serving cell is in the idle state or in the busy state, based on the measurement (the detection). In a case that the terminal apparatus 1 identifies that the serving cell is in the idle state, based on the measurement (the detection), the radio transmission and/or reception apparatus can transmit the physical channel and the physical signal in the serving cell. In a case that the serving cell is identified in the busy state based on the terminal apparatus 1, the radio transmission and/or reception apparatus does not transmit the physical channel and the physical signal in the serving cell.
  • the serving cell being in the busy state may mean that the interference power (or the mean of the interference power, the mean of the interference power in time and/or the frequency) detected in the prescribed radio resources of the serving cell exceeds (or is equal to or larger than) the threshold of LBT (or the threshold of the carrier sense, the threshold of the CCA, the threshold of the energy detection).
  • the serving cell being in the idle state may mean the interference power detected in the prescribed radio resources of the serving cell does not exceed (or is equal to or smaller than) the threshold of LBT.
  • the prescribed radio resources may be given based on a prescribed time and a prescribed frequency.
  • the prescribed time may be 4 microseconds.
  • the prescribed time may be 25 microseconds.
  • the prescribed time may be 36 microseconds.
  • the prescribed time may be 45 microseconds.
  • the prescribed time may be defined as the smallest period used for the measurement of the reception power.
  • the prescribed time may be given based on information included in the higher layer signaling transmitted by the base station apparatus 3 and/or information included in the DCI transmitted by the base station apparatus 3.
  • the prescribed time may be given based on a counter (or a back off counter).
  • the maximum of the counter is given by the maximum contention window (CW max ).
  • the minimum of the counter is given by the minimum contention window (CW min ).
  • the prescribed frequency may be given based on the band of the serving cell.
  • the prescribed frequency may be given as a part of the band of the serving cell.
  • the prescribed frequency may be given based on scheduling information included in the DCI transmitted by the base station apparatus 3.
  • the SC-FDMA symbols included in the PUSCH may be the number of the SC-FDMA symbols used for generation of time continuous signals generated based on the contents of resource elements of the PUSCH.
  • the number of the SC-FDMA symbols included in the PUSCH transmitted by the terminal apparatus 1 may be given based on the procedure of LBT.
  • the number of the SC-FDMA symbols included in the PUSCH transmitted by the terminal apparatus 1 may be given based on configuration of the prescribed period for LBT (the prescribed period for LBT is also referred to as a LBT period).
  • the LBT period for the PUSCH may be included in the transmission period of the PUSCH.
  • the LBT period being included in the transmission period of the PUSCH may mean that the LBT period or at least a part of the LBT period is included in a period configured for the PUSCH (1 ms period).
  • the transmission period of the PUSCH may be the subframe where the transmission of the PUSCH is configured.
  • the number of the SC-FDMA symbols included in the PUSCH transmitted by the terminal apparatus 1 may be given based on the configuration of the LBT period for the PUSCH. For example, in the transmission of the PUSCH scheduled by the base station apparatus 3, the number of the SC-FDMA symbols included in the PUSCH transmitted by the terminal apparatus 1 is given based on Equation (8) in a case that the LBT period and the transmission of the PUSCH are not configured in the same subframe.
  • N symb PUSCH-initial 2 ⁇ N symb UL ⁇ 1 ⁇ N SRS
  • N UL symb is the number of the SC-FDMA symbols included in 1 slot.
  • N SRS may be the number of the SC-FDMA symbols used for Sounding Reference Symbol (SRS) included in 1 subframe where the transmission of the PUSCH is configured.
  • the terminal apparatus 1 may trigger the transmission of the SRS periodically or by information/parameter received from the base station apparatus 3.
  • the SRS is used for estimate of the channel in the uplink and the like.
  • N SRS may be given by information/parameter received from the base station apparatus 3.
  • N SRS may be given by information indicating the transmission Ending symbol included in DCI and used for scheduling the PUSCH (or subframe).
  • the number of the SC-FDMA symbols included in the PUSCH transmitted by the terminal apparatus 1 may be given based on Equation (9) in a case that the LBT period and the transmission of the PUSCH are configured in the same subframe.
  • N symb PUSCH-initial 2 ⁇ N symb UL ⁇ 1 ⁇ N SRS ⁇ N LBT
  • N LBT may be the number of the SC-FDMA symbols corresponding to the contents of the resource elements which are not used for the generation of the time continuous signal.
  • N LBT may be the number of the SC-FDMA symbols corresponding to the contents of the resource elements which are not used for the generation of the time continuous signal, due to the LBT period being configured.
  • N LBT 1 in a case that the LBT period and the transmission of the PUSCH are configured in the same subframe.
  • N LBT 1 in a case that the LBT period and the transmission of the PUSCH are configured in the same subframe, and the number of the SC-FDMA symbols corresponding to the contents of the resource elements which are not used for the generation of the time continuous signal is 1.
  • the number of the SC-FDMA symbols of the PUSCH transmitted by the terminal apparatus 1 may be given based on Equation (9).
  • N LBT 0 in a case that the LBT period and the transmission of the PUSCH are not configured in the same subframe.
  • N LBT 0 in a case that the LBT period and the transmission of the PUSCH are not configured in the same subframe, and the number of the SC-FDMA symbols corresponding to the contents of the resource elements which are not used for the generation of the time continuous signal is 0.
  • N LBT X in a case that the LBT period and the transmission of the PUSCH are configured in the same subframe, and the number of the SC-FDMA symbols corresponding to the contents of the resource elements which are not used for the generation of the time continuous signal is X.
  • X is a fixed number.
  • FIG. 12 is a diagram illustrating an example in which the LBT period is included in the period where the time continuous signal generated based on SC-FDMA symbol #0 (grid pattern) is transmitted (the period given based on the range of the time t in Equation (2)).
  • the LBT period may not be equal to the length of the period where the time continuous signal generated based on the SC-FDMA symbol is transmitted.
  • the time continuous signal generated based on SC-FDMA symbol #1 is transmitted through the period A after the LBT period. Note that the sum of the LBT period and the period A may be equal to the length of the period where the time continuous signal generated based on the SC-FDMA symbol is transmitted.
  • the channel after the period A may be reserved by a terminal apparatus which is not the terminal apparatus 1.
  • the channel being reserved by multiple terminal apparatuses results in an element of transmission performance deterioration (a condition that multiple terminal apparatuses reserve a channel for LBT or CCA and performs transmission is also referred to as a collision).
  • the period A is also referred to as a gap of LBT (LBT gap) or a gap of CCA (CCA gap), and the like.
  • the terminal apparatus 1 may transmit a dummy signal as a signal for channel reservation.
  • a generation method of the dummy signal may be given based on the description of a specification and the like.
  • the dummy signal may be generated based on a reference signal.
  • the dummy signal being transmitted by the terminal apparatus 1 may be that power higher than a prescribed power is emitted outside the terminal apparatus 1.
  • the period A in FIG. 12 may correspond to the transmission period of the time continuous signal of the first SC-FDMA symbol.
  • the dummy signal transmitted by the terminal apparatus 1 is not used for calculation of transmission coding rate (or Bit Per Resource Element (BPRE)) of the transport block included in the PUSCH. That is, it is preferable that the dummy signal is not considered in calculation of the number of coded bits Q of the CQI/PMI, the number of coded bits G of the RI, the number of coded bits H of the HARQ-ACK, and/or the transmit power of the PUSCH.
  • N LBT 1 in a case that the dummy signal is transmitted by the terminal apparatus 1 during the period A in FIG. 12 .
  • N LBT X in a case that the dummy signal is transmitted in the X SC-FDMA symbols by the terminal apparatus 1.
  • the first SC-FDMA symbol may be one or multiple SC-FDMA symbols.
  • the terminal apparatus 1 may transmit a signal where CP of SC-FDMA symbol #1 is extended (Extension of cyclic prefix of the next SC-FDMA symbol) (CP extended outside the SC-FDMA symbol or extended CP).
  • the extended CP may not be used for the calculation of the transmission coding rate of the transport block included in the PUSCH. This results from that CP is used for interference cancellation by multipath fading particular to radio transmission environment.
  • the transmit power of the signal where CP of SC-FDMA symbol #1 is extended is not considered in the calculation of the number of coded bits Q of the CQI/PMI, the number of coded bits G of the RI, the number of coded bits H of the HARQ-ACK, and/or the transmit power for the PUSCH.
  • N LBT 1 in a case that CP extended by the terminal apparatus 1 is transmitted during the period A in FIG. 12 .
  • N LBT X in a case that extended CP is transmitted in the X SC-FDMA symbols by the terminal apparatus 1.
  • the first SC-FDMA symbol may be multiple SC-FDMA symbols.
  • a specific example of the extended CP of the second SC-FDMA symbol l second following the first SC-FDMA symbol 1 will be described by using an example in which the first SC-FDMA symbol is SC-FDMA symbol 1, and the second SC-FDMA symbol is SC-FDMA symbol l second .
  • the extended CP of the second SC-FDMA symbol l second following the first SC-FDMA symbol l is also referred to as an extended CP below.
  • the extended CP of the second SC-FDMA symbol l second following the first SC-FDMA symbol l may be generated based on Equation (2).
  • Time T l,0 where the transmission of the first SC-FDMA symbol l is started, used for the extended CP of the second SC-FDMA symbol l second following the first SC-FDMA symbol l, may be given based on LBT.
  • N LBT may be given based on NULL (Om) substituted for a modulation symbol in Equation (1).
  • N LBT may be given based on the number of NULLs substituted for a modulation symbol in Equation (1).
  • N sc is the number of subcarriers of the SC-FDMA symbol included in the PUSCH scheduled by the base station apparatus 3.
  • N LBT N NULL /Nsc in a case that the LBT period and the transmission of the PUSCH are configured in the same subframe, in the transmission of the PUSCH scheduled by the base station apparatus 3, and N NULL NULLs are substituted for the modulation symbol, in a modulation symbol generating the contents of the resource elements corresponding to the Y SC-FDMA symbols included in the PUSCH.
  • N LBT X + N NULL / (N sc ⁇ Y) in a case that the LBT period and the transmission of the PUSCH are configured in the same subframe, in the transmission of the PUSCH scheduled by the base station apparatus 3, the time continuous signal generated based on the X SC-FDMA symbols included in the PUSCH is not transmitted, and N NULL NULLs are substituted for the modulation symbol, in a modulation symbol generating the contents of the resource elements corresponding to the Y SC-FDMA symbols included in the PUSCH.
  • N LBT N NULL / (N sc ⁇ Y) in a case that the LBT period and the transmission of the PUSCH are configured in the same subframe, in the transmission of the PUSCH scheduled by the base station apparatus 3, and N NULL NULLs are substituted for the modulation symbol, in a modulation symbol generating the contents of the resource elements corresponding to the Y SC-FDMA symbols included in the PUSCH.
  • N NULL NULLs are substituted for the modulation symbol, in a modulation symbol generating the contents of the resource elements corresponding to the Y SC-FDMA symbols included in the PUSCH.
  • Y 1.
  • the actual transmission period of the time continuous signal may be different from the length of the time continuous signal generated based on the contents of the resource elements corresponding to the SC-FDMA symbol.
  • N LBT may be given based on the transmission period.
  • the time continuous signal may include a range from T l,0 to (N CP,l + N) ⁇ T s . That is, the transmission timing of the time continuous signal may be T l,0 .
  • the transmission period T tx may be given based on the generated time signal.
  • T symbol may be the length of the generated time continuous signal.
  • Tinitial may be the time indicating the top (or the top sampling point) of the generated time continuous signal.
  • T n is a value indicating a value of a positive or negative error of the transmission timing.
  • the error of the transmission timing is an error brought by some of devices included in the terminal apparatus 1 and/or the base station apparatus 3, such as synchronization error, transition time of the transmission and/or reception, the clock error.
  • N LBT may be given based on information included in the higher layer signaling transmitted by the base station apparatus 3 and/or information included in the DCI transmitted by the base station apparatus 3.
  • X may be given based on information included in the higher layer signaling transmitted by the base station apparatus 3 and/or information included in the DCI transmitted by the base station apparatus 3.
  • Y may be given based on information included in the higher layer signaling transmitted by the base station apparatus 3 and/or information included in the DCI transmitted by the base station apparatus 3.
  • the number of NULLs N NULL substituted for a modulation symbol may be given based on information included in the higher layer signaling transmitted by the base station apparatus 3 and/or information included in the DCI transmitted by the base station apparatus 3.
  • Information included in the higher layer signaling transmitted by the base station apparatus 3, and/or information included in the DCI transmitted by the base station apparatus 3 may be information indicating that some SC-FDMA symbols included in the PUSCH are not transmitted.
  • a symbol being transmitted by the terminal apparatus 1 may mean that the terminal apparatus 1 emits power that exceeds (or is equal to or larger than) a prescribed power (or mean power, power density, power strength, electric field strength, electric wave strength, electric field density, electric wave density, and the like) outside the terminal apparatus 1 in a prescribed time and a prescribed frequency corresponding to the PUSCH.
  • the symbol being transmitted by the terminal apparatus 1 may mean that power in a prescribed time and a prescribed frequency corresponding to the radio resources for the symbol is higher than emitted power other than the prescribed time and/or frequency other than the prescribed frequency.
  • the prescribed power may be -39 dBm.
  • the prescribed power may be -30 dBm.
  • the prescribed power may be -72 dBm. In one aspect of the present invention, the prescribed power is not limited.
  • the drop process of PUSCH 1002 may be performed by radio transmission and/or reception unit 10.
  • the higher layer processing unit 14 may consider that the transmission of PUSCH 1002 was performed.
  • the higher layer processing unit 14 may generate a transport block x for the transmission of PUSCH 1002.
  • it retains an uplink grant included in PDCCH 1000 and may direct the radio transmission and/or reception unit 10 for retransmission of the transport block x based on the retained uplink grant.
  • the terminal apparatus 1 receives PDCCH 1004 including an uplink grant indicating retransmission.
  • the terminal apparatus 1 performs PUSCH 1006 including the transport block x, based on detection of PDCCH 1004.
  • PUSCH 1006 is also referred to as retransmission PUSCH 1006.
  • PUSCH 1006 corresponds to retransmission of PUSCH 1002.
  • the terminal apparatus 1 receives PDCCH 1008 including an uplink grant indicating retransmission.
  • the CSI request field included in the uplink grant of PDCCH 1008 may be set to trigger CSI reporting.
  • the HARQ-ACK request field included in the uplink grant of PDCCH 1008 may be set to trigger HARQ-ACK transmission.
  • the terminal apparatus 1 transmits PUSCH 1010 including the UCI (the CQI/PMI, the RI, and/or the HARQ-ACK) and the transport block x, based on detection of PDCCH 1008.
  • PUSCH 1010 is also referred to as retransmission PUSCH 1010.
  • PUSCH 1010 corresponds to retransmission of PUSCH 1002 and/or PUSCH 1006.
  • PDCCH 1000, 1004, 1008, and PUSCH 1002, PUSCH1006, 1010 correspond to the same HARQ process.
  • the number of coded bits Q of the CQI/PMI, the number of coded bits G of the RI, the number of coded bits H of the HARQ-ACK, and the transmit power for PUSCH 1010, P PUSCH,c (i) may be the bandwidth scheduled for PUSCH 1002, and be given at least based on M PUSCH-initial sc obtained from PDCCH 1000 and the number of the SC-FDMA symbols for PUSCH 1002 for the same transport block x, N PUSCH-initial symbol .
  • the base station apparatus 3 cannot know whether the reason why PUSCH 1002 was not performed is because (i) the terminal apparatus 1 failed in the detection of initial PDCCH 1000, (ii) the result of LBT is a busy state, or (iii) the total of the estimated transmit powers of multiple PUSCH transmissions including PUSCH 1002 exceeds the maximum transmit power configured.
  • the number of coded bits Q of the CQI/PMI, the number of coded bits G of the RI, the number of coded bits H of the HARQ-ACK, and the transmit power for PUSCH 1006, P PUSCH,c (i) to vary depending on the reason why the transmission of PUSCH 1002 was not performed.
  • the number of coded bits Q of the CQI/PMI, the number of coded bits G of the RI, the number of coded bits H of the HARQ-ACK, and the transmit power for PUSCH 1010, P PUSCH,c (i) may be the bandwidth scheduled for PUSCH 1006, and be given at least based on M PUSCH-initial sc obtained from PDCCH 1004 and the number of the SC-FDMA symbols for PUSCH 1006 for the same transport block x, N PUSCH-initial symbol .
  • the base station apparatus 3 can correctly receive PUSCH 1006 (the UCI and the transport block) even if it does not know the reason why the transmission of PUSCH 1002 was not performed by the terminal apparatus 1.
  • PUSCH1006 is also referred to as a PUSCH initial transmission. That is, in a case that the reason why PUSCH 1002 was not performed is because (ii) the result of the LBT is a busy state, PDCCH 1004 may be an initial PDCCH.
  • the number of coded bits Q of the CQI/PMI, the number of coded bits G of the RI, the number of coded bits H of the HARQ-ACK, and the transmit power for PUSCH 1010, P PUSCH,c (i) may be the bandwidth scheduled for PUSCH 1002, and be given at least based on M PUSCH-initial sc obtained from PDCCH 1000 and the number of the SC-FDMA symbols for PUSCH 1002 for the same transport block x, N PUSCH-initial symbol .
  • Some or all of the following element A to element I may be given at least based on the number of SC-FDMA symbols included in the PUSCH. Some or all of the following element A to element I may be given based on the generation method of the time continuous signal generated based on the contents of the resource elements corresponding to the SC-FDMA symbol included in the PUSCH. Some or all of the following element A to element I may be given based on the number of NULLs inserted into a modulation symbol generating the contents of the resource elements used for the generation of the SC-FDMA symbol included in the PUSCH.
  • Some or all of the following element A to element I may be given based on the transmission period in a case that the actual transmission period of the time continuous signal is different from the length of the time continuous signal generated based on the contents of the resource elements corresponding to the SC-FDMA symbol.
  • the number of SC-FDMA symbols of the PUSCH may be given based on the configuration of the LBT period. For example, the number of SC-FDMA symbols of the PUSCH may be given based on whether the transmission of the PUSCH and the LBT period are configured in the same subframe. For example, the number of SC-FDMA symbols of the PUSCH may be given based on the number of the SC-FDMA symbols N LBT of the PUSCH which is not transmitted due to the LBT period being configured. For example, the number of SC-FDMA symbols N LBT of the PUSCH which is not transmitted due to the LBT period being configured may be 1 in a case that the transmission of the PUSCH and the LBT period are configured in the same subframe. The number of SC-FDMA symbols N LBT of the PUSCH which is not transmitted due to the LBT period being configured may be 0 in a case that the transmission of the PUSCH and the LBT period are not configured in the same subframe.
  • the terminal apparatus 1 can efficiently perform the uplink transmission.
  • the base station apparatus 3 can efficiently receive the uplink transmission.
  • a program running on a base station apparatus 3 and a program running on a terminal apparatus 1 may be a program that controls a Central Processing Unit (CPU) and the like, such that the program causes a computer to operate in such a manner as to realize the functions of the above-described embodiment according to one aspect of the present invention.
  • the information handled in these devices is temporarily stored in a Random Access Memory (RAM) while being processed. Thereafter, the information is stored in various types of Read Only Memory (ROM) such as a flash ROM and a Hard Disk Drive (HDD), and when necessary, read by the CPU to be modified or rewritten.
  • ROM Read Only Memory
  • HDD Hard Disk Drive
  • the terminal apparatus 1 and the base station apparatus 3 may be partially achieved by a computer.
  • this configuration may be realized by recording a program for realizing such control functions on a computer-readable recording medium and causing a computer system to read the program recorded on the recording medium for execution.
  • the "computer system” mentioned here refers to a computer system built into the terminal apparatus 1 or the base station apparatus 3, and the computer system includes an OS and hardware components such as a peripheral apparatus.
  • the "computer-readable recording medium” refers to a portable medium such as a flexible disk, a magneto-optical disk, a ROM, a CD-ROM, and the like, and a storage apparatus such as a hard disk built into the computer system.
  • the "computer-readable recording medium” may include a medium that dynamically retains a program for a short period of time, such as a communication line that is used to transmit the program over a network such as the Internet or over a communication line such as a telephone line, and may also include a medium that retains a program for a fixed period of time, such as a volatile memory within the computer system for functioning as a server or a client in such a case.
  • the program may be configured to realize some of the functions described above, and also may be configured to be capable of realizing the functions described above in combination with a program already recorded in the computer system.
  • the base station apparatus 3 according to the above-described embodiment can be realized as an aggregation (a device group) constituted of multiple devices.
  • Each of the apparatuses configuring such an apparatus group may include some or all portions of each function or each functional block of the base station apparatus 3 according to the above-described embodiment.
  • the apparatus group may include each general function or each functional block of the base station apparatus 3.
  • the terminal apparatus 1 according to the above-described embodiment can also communicate with the base station apparatus as the aggregation.
  • the base station apparatus 3 according to the above-described embodiment may be an Evolved Universal Terrestrial Radio Access Network (EUTRAN). Furthermore, the base station apparatus 3 according to the above-described embodiment may have some or all portions of the functions of a node higher than an eNodeB.
  • EUTRAN Evolved Universal Terrestrial Radio Access Network
  • each of the terminal apparatus 1 and the base station apparatus 3 may be typically achieved as an LSI which is an integrated circuit or may be achieved as a chip set.
  • the functional blocks of each of the terminal apparatus 1 and the base station apparatus 3 may be individually achieved as a chip, or some or all of the functional blocks may be integrated into a chip.
  • a circuit integration technique is not limited to the LSI, and may be realized with a dedicated circuit or a general-purpose processor.
  • a circuit integration technology with which an LSI is replaced appears it is also possible to use an integrated circuit based on the technology.
  • the terminal apparatus has been described as an example of a communication apparatus, but the present invention is not limited to such a terminal apparatus, and is applicable to a terminal apparatus or a communication apparatus of a fixed-type or a stationary-type electronic apparatus installed indoors or outdoors, for example, such as an Audio-Video (AV) apparatus, a kitchen apparatus, a cleaning or washing machine, an air-conditioning apparatus, office equipment, a vending machine, and other household apparatuses.
  • AV Audio-Video
  • One aspect of the present invention can be utilized in, for example, a communication system, a communications apparatus (e.g., a mobile apparatus, a base station apparatus, a wireless LAN device, or a sensor device), an integrated circuit (e.g., a communication chip), or program.
  • a communications apparatus e.g., a mobile apparatus, a base station apparatus, a wireless LAN device, or a sensor device
  • an integrated circuit e.g., a communication chip

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
EP17839560.4A 2016-08-09 2017-08-09 Dispositif terminal, dispositif station de base, procédé de communication et circuit intégré Active EP3499830B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2016156242 2016-08-09
PCT/JP2017/029007 WO2018030493A1 (fr) 2016-08-09 2017-08-09 Dispositif terminal, dispositif station de base, procédé de communication et circuit intégré

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EP3499830A1 true EP3499830A1 (fr) 2019-06-19
EP3499830A4 EP3499830A4 (fr) 2020-04-01
EP3499830B1 EP3499830B1 (fr) 2021-10-06

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US (1) US11310818B2 (fr)
EP (1) EP3499830B1 (fr)
JP (1) JP6800981B2 (fr)
CN (1) CN109845208B (fr)
CA (1) CA3032262A1 (fr)
WO (1) WO2018030493A1 (fr)

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KR20190017612A (ko) * 2017-08-10 2019-02-20 삼성전자주식회사 무선 셀룰라 통신 시스템에서 상향 제어 채널 전송 방법 및 장치
WO2019031759A1 (fr) 2017-08-10 2019-02-14 삼성전자 주식회사 Procédé et dispositif de transmission de canal de commande de liaison montante dans un système de communication cellulaire sans fil
US11540257B2 (en) * 2018-03-23 2022-12-27 Qualcomm Incorporated Uplink control information transmission on autonomous uplink in new radio-unlicensed (NR-U)
US11196512B2 (en) * 2018-06-29 2021-12-07 Qualcomm Incorporated Resolving decodability for subsequent transmissions whose throughput exceeds a threshold
US11582077B2 (en) 2019-02-25 2023-02-14 Huawei Technologies Co., Ltd. Systems and methods for transmission of uplink control information over multiple carriers in unlicensed spectrum
US20220166555A1 (en) * 2019-03-15 2022-05-26 Ntt Docomo, Inc. User terminal and radio communication method

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KR101791266B1 (ko) * 2010-02-12 2017-10-30 엘지전자 주식회사 무선 통신 시스템에서 데이터 전송 방법 및 장치
US9516606B2 (en) * 2013-07-19 2016-12-06 Sharp Kabushiki Kaisha Terminal apparatus, method, and integrated circuit
JP6439985B2 (ja) * 2013-11-26 2018-12-19 シャープ株式会社 端末装置、基地局装置、通信方法
CN107079335A (zh) * 2014-11-06 2017-08-18 株式会社Ntt都科摩 无线基站、用户终端以及无线通信方法
JP2019169748A (ja) * 2016-08-09 2019-10-03 シャープ株式会社 端末装置、基地局装置、通信方法、および、集積回路

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JPWO2018030493A1 (ja) 2019-06-27
CA3032262A1 (fr) 2018-02-15
EP3499830B1 (fr) 2021-10-06
EP3499830A4 (fr) 2020-04-01
US20190174524A1 (en) 2019-06-06
CN109845208A (zh) 2019-06-04
JP6800981B2 (ja) 2020-12-16
WO2018030493A1 (fr) 2018-02-15
CN109845208B (zh) 2022-02-15
US11310818B2 (en) 2022-04-19

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